We can easily enumerate E and F:
The intersection is a set composed by all the element belonging to both E and F, i.e. 4.
The intersection of this set with D works in the same way, but it's actually a trivial one, since is a subset of D. In fact, D is the set of all integers, while 4 is a particular integer. And in general, if A is a subset of B, then the intersection between A and B is A itself, so the final answer is
Answer:
The equation shows the relationship between the number of bags, b, and the total cost, c, for flying with this airline is:
C = 20b + 150
Hence, option C is correct.
Step-by-step explanation:
The slope-intercept form of the line equation
where
Given that an airline charges $150 for a ticket. It means the initial condition is $150.
Therefore, the y-intercept c = 150.
Given that an airline charges $20 for each bag. It means the rate of change is $20 for each bag.
Therefore, the rate of change or slope m = 20
Let 'C' be the total cost and 'b' be the number of bags.
Thus, substituting y = C, x = b, m = 20 and c = 150
y = mx + c
C = 20b + 150
Therefore, the equation shows the relationship between the number of bags, b, and the total cost, c, for flying with this airline is:
C = 20b + 150
Hence, option C is correct.
Answer: 120
<u>Step-by-step explanation:</u>
First book and Second Book and Third Book
6 choices x 5 remaining choices x 4 remaining choices = 120
If you want to use a formula: